Quote:
Originally Posted by Atmos
You've done a nice job there Scott, the KAF-11002 sensor is notoriously noisy (read noise) and not a friendly narrowband sensor due to also having quite a low QE compared to many newer sensors. It is a fantastic sensor for LRGB where read noise isn't so much of an issue, even better when coupled with a 50mm for wide field! Sadly, for narrowband you do need to be pushing 1 hour subs for that fainter stuff.
With the ASI-1600 comparison though, yes it has a really low read noise but as Rick has mentioned, it is not suited to longer focal lengths due to the tiny pixels. At gain 0 the 1600 is at par with the 16803 (they become sky limited at the same time[difference in read noise approximately equals different in pixel size]) but the 16803 has 5x the well capacity. At unity, the 1600 reaches sky limited 3.75 times faster but saturation 40x faster!
When you get that OAG back on Scotty you'll be able to push that Ha a lot harder that's for sure  The Atik 11000 sensors is a great one, just isn't overly narrowband friendly without long exposures |
Thanks Colin. That certainly is some food for thought. I think after long thought over the past few months that the 11000 will stay unless it breaks down again.
Tried 10 minute subs tonight. Shocking flexure. So 5 minutes it is until the oag is sorted.
Anyone know of a celestron oag for sale
